Children high chair



FIG. 1 is a back view of the children high chair showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a right front view thereof;

FIG. 6 is a left front thereof; and,

FIG. 7 is a left back view thereof. 

CLAIM The ornamental design for a children high chair, as shown and described. 